Band fixing device



KIYISHI MOCHIZUKI 3,425,104

BAND FIXING DEVI CE Feb. 4, 1969 Filed Feb. 29, 1968 KIYISHL MOCHIZUIUINVENTOR.

United States Patent 2/ 33,497 US. Cl. 24-265 Int. Cl. A44b 11/25,11/12; A44c /18 1 Claim ABSTRACT OF THE DISCLOSURE A band fixing deviceconsisting of a base frame, a pressing plate, a locking member, an eyemember, a locking cover and two coupling shafts, all of the componentmembers except said shafts being preferably made of resilient sheetmetal, said pressing plate and said locking member being mounted on saidbase frame with one of said shafts, said pressing plate being held apartfrom said base frame for permitting insertion of one part of a band,said locking member serving to press said pressing plate, said eyemember serving to fasten another part of said band and to engage saidlocking member, and said locking cover being mounted on said base framewith another of said shafts and serving to press said pressing plate andto cover the fixing mechanism of said device.

The present invention relates to band fixing devices, and particularlydevices for fixing a wrist watch band to an arm.

A band fixing device according to the invention provides the followingfeatures and advantages:

(1) Said band fixing device consists of five component members and twocoupling shafts, all of said members being preferably made of resilientsheet metal, and can be easily assembled.

(2) By means of said device a wrist watch can be easily fixed to an armand easily released from said arm.

(3) The-fixation of said wrist watch is firm and steady, a free end partof a wrist watch band being pressed to a base frame of said device bytwo locking members through a pressing plate.

(4) The fixing mechanism of said device is concealed by a locking cover,thereby affording a good appearance.

Other [features and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawing:

FIG. 1 is a perspective view of a band fixing device according to theinvention, which is in use;

FIG. 2 is a sectional enlarged elevation of said device taken along aline A-A in FIG. 1;

FIG. 3 is a sectional elevation of said device in a state which isdifferent from the above;

FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG. 8 are perspective views of abase frame, a pressing plate, a locking member, an eye member and alocking cover, respectively.

The preferred embodiment of the invention shown in the drawing consistsof a base frame 1, a pressing plate 5, a locking member 9, an eye member15, a locking cover 18 and two coupling shafts 13 and 13, all of themexcept said shafts being preferably made of sheet metal.

The base frame \1 is U-shaped as shown in FIG. 4 and hasnearly-semicircular upright portions 2 at both ends of its base portion3, each of which portions is pro vided with an inside shaft-receivinghole 4 and an outside shaft-receiving hole 4' at its upper right part.

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As shown in FIG. 5 the pressing plate 5 is rectangular and smaller thanthe base frame 1, especially in lateral width (FIG. 3). Said plate isprovided with a long upheaval 6 along its right longitudinal edge, andopposing upright ears 7 at its lateral edges, respectively, each of saidears having a second shaft-receiving hole 8.

The locking member 9 is shaped as shown in FLIG- 6 and its rectangularend portion is downwardly folded to form a shaft-passing sleeve 10 and awide projection 11 serving to press the plate 5 down, a left shortenedend portion of said member being upwardly folded to form a hook 12.

As shown in FIG. 3, inserted through the sleeve 10 is the coupling shaft13, both slender ends of which respectively pass through the secondshaft-receiving holes 8 of the pressing plate 5 and are rigidly securedto the end portions 2 of the base frame 1 passing through the insideshaft-receiving holes 4, whereby said plate is held apart from the baseportion 3 of said base frame for permitting insertion of a free end partof a wrist watch band 14.

The eye member 15 is of rectangular crooked shape as shown in FIG. 7.Its upper right portion is provided with a rectangular large holeforming an eye 16 to engage the hook 12 of the locking member 9, thelower left portion of said eye member having upright ears 17 at its endparts, respectively, which serves to fasten another free end part 14 ofsaid band.

The rectangular locking cover 18 is convexly shaped as shown in FIG. 8which illustrates its reverse side. The right end portion 19 of saidcover is downwardly bent and the left end portion thereof is upwardlyfolded to form a shaft-passing sleeve 10* and a wide projecttion 11'serving to press the pressing plate down.

The coupling shaft 13' is inserted through the sleeve 10 and bothslender ends of said shaft are rigidly secured to the end portions 2 ofthe base frame 1 passing through the outside shaft-receiving holes 4' asshown in FIG. 3.

The band fixing device is thus assembled and its operation is asfollows:

As shown in FIG. 3 a free end part of the wrist watch band, for exampleof leather, 14, two parts of which are respectively secured to bothsides of a wrist watch, is passed between the base portion 3 of the baseframe 1 and the pressing plate 5, and another end part 14' of said bandis rigidly secured to the lower portion having the ears 1'] of the eyemember 15. After engaging the eye portion 16 of said eye member with thehook 12 of the locking member 9, said locking member is turned in theleft-hand direction about the shaft 13 as shown in FIG. 2, then the wideprojection 11 of said locking member presses the pressing plate 5 down,and said plate presses the band part 14 to the base portion 3 of thebase frame 1, thereby said band part being locked.

Next, the locking cover 18 is turned in the left-hand direction aboutthe shaft 13' until the bent portion 19 touches the eye portion 16, thenthe wide projection 11' presses the pressing plate 5 down after crossingover the upheaval 6, whereby the band part 14 is more firmly locked,thus the band consisting of the two parts 14 and 14' together with thewrist watch is tfirmly fixed to an arm, and the fixing mechanism of saiddevice is concealed by the locking cover 18, thereby affording a goodappearance.

As above stated the fixing operation of said device is very easy, andits releasing operation is quite opposite to said fixing operation, saidband together with the wrist watch can be easily released from said arm.However, undesirable release of the locking cover 18 is defended by theupheaval 6 engaging the wide projection 11'.

What I claim is:

1. A band fixing device consisting of a base frame, a pressing plate, alocking member, an eye member, a locking cover and two coupling shafts,all of the component members except said shafts being preferably made ofresilient sheet metal, said pressing plate and said locking member beingmounted on said base frame with one of said shafts, said pressing platebeing held apart from said base frame for permitting insertion of onepart of a band, said locking member serving to press said pressingplate, said eye member serving to fasten another part of said band andto engage said locking member, and said locking cover being mounted onsaid base frame with another of said shafts and serving to press saidpressing plate and to cover the fixing mechanism 5 of said device.

References Cited UNITED STATES PATENTS 2,333,048 10/1943 Schoeninger2478 XR FOREIGN PATENTS 2/1920' Austria. 8/1937 Great Britain.

US. Cl. X.R. 2478

